Vector dark matter and LHC constraints, including a 95 GeV light Higgs boson

Abstract

We study LHC searches for an extension of the Standard Model (SM) by exploiting an additional Abelian $U_D(1)$ gauge symmetry and a complex scalar Higgs portal. As the scalar is charged under this gauge symmetry, a vector dark matter (VDM) candidate can satisfy the observed relic abundance and limits from direct dark matter (DM) searches. The ATLAS and CMS experiments have developed a broad search program for the DM candidates, including associate production of Higgs boson, $Z$ boson, and top quark that couple to DM. In this paper, we perform an extensive analysis to constrain the model by using these experiments at LHC. It can be seen that the LHC results can exclude some parts of the parameter space that are still allowed by relic density and the direct detection searches. Using the LHC results, all scalar Higgs portal masses are excluded for the light VDM. Furthermore, exclusion limits on the parameter space of the model by using the new results of the CMS and ATLAS Collaborations for a new light Higgs boson with mass $\sim 95\mathrm{GeV}$ are provided.

19 pages, 13 figures, 1 table, a minor change in the title, a few clarifications added in the text, references added, version published in PRD

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Cited by in corpus (11)

• Superposition of CP-Even and CP-Odd Higgs Resonances: Explaining the 95 GeV Excesses within a Two-Higgs Doublet Model
• Interpretation of 95 GeV Excess within the Georgi-Machacek Model in Light of Positive Definiteness Constraints
• Explaining 95 GeV Anomalies in the 2-Higgs Doublet Model Type-I
• Exploring Potential Higgs Resonances at 650 GeV and 95 GeV in the 2HDM Type III
• Probing Type-I 2HDM light Higgs in the top-pair-associated diphoton channel
• 96 GeV Scalar Boson in the 2HDM with U(1)_H Gauge Symmetry
• Testing a 95 GeV Scalar at the CEPC with Machine Learning
• Particle-level transformers for 95 GeV Higgs boson searches at future $e^{+}{e}^{-}$ Higgs factories
• Interpreting the 650 GeV and 95 GeV Higgs anomalies in the next-to-two-Higgs-doublet model
• Phenomenology of the standard HVM and 95.4 GeV excess
• Vector Dark Matter in a $U(1{)}_X$ extended 2HDM